Oil & Gas
| Wed 01 Jul 2026
Beijing, July 2 -- Petrochina Co Limited and Changqing Eng Design Co Ltd have submitted a patent application for Compressor Anti-surge Device and Control Method. Yang Xiaofeng, Zhang Xin, Zhang Junyao, Yang Guang, Liu Jiaming, Zhang Ying, Qiao Guanghui, Qiu Peng, Qiao Wenbo, Wu Baoxiang, Yang Chong, Ren Xiaofeng, Zhang Lei, Yao ..